About DosingCalc
Who we are, what the calculator does, and how we check our numbers.
What this site is
DosingCalc is a free reconstitution calculator for peptides like semaglutide, tirzepatide, BPC-157, ipamorelin, and a handful of others. You enter a vial size, the amount of bacteriostatic water you mixed it with, and a target dose. The calculator tells you how many units to draw on an insulin syringe.
That is the whole product. No account, no paywall, nothing to sell. We do not stock or ship any compound. The site exists because the math is confusing enough that most people ask the same question in the same forum thread every week.
Who writes it
DosingCalc is run by a small editorial team. We do not pretend to be doctors. We are careful researchers who read the papers, check the math, and try to publish numbers a reasonable clinician would not flinch at.
Every guide and calculator page is reviewed against published sources before it goes up. When we update a dose range or correct an error, we re-check the source first. We log corrections in docs/RESEARCH-CORRECTIONS.md in the public repo.
You can reach us at hello@dosingcalc.com. If you spot a mistake in a number, tell us and we will fix it.
Where our numbers come from
Dose ranges on this site come from three places, in this order of preference:
- FDA prescribing information for the approved version of the drug (Ozempic, Wegovy, Mounjaro, Zepbound).
- Peer-reviewed studies in humans, indexed in PubMed, with sample sizes and dosing schedules we can verify.
- Long-running community references where the underlying data is traceable, only for compounds without good clinical data.
If a number on the site cannot be traced back to one of those, we either remove it or mark it clearly. We do not publish doses we cannot defend.
What we will not do
- Recommend a dose for you specifically. The calculator is math, not medicine.
- Promote any vendor, pharmacy, or compounder.
- Run ads that misrepresent what these compounds do.
- Publish anecdote-only dose ranges as if they were settled science.
About medical advice
Nothing on this site is medical advice. The calculator does not know your weight, your labs, your other medications, or whether you should be taking the compound at all. Those are questions for a clinician. See the full disclaimer for the legal language.